Identifying Timing Advance Command (TAC) Update at User Equipment for Optimizing TA Tracking

    公开(公告)号:US20250088990A1

    公开(公告)日:2025-03-13

    申请号:US18939442

    申请日:2024-11-06

    Abstract: A method is disclosed for performing timing advance command (TAC) updates, comprising: configuring an appropriate block error rate (BLER); forwarding a timing advance command (TAC) for a radio network temporary identifier (RNTI) x to a user equipment (UE), the TAC not equal to 31; tracking a time of receipt of a first downlink shared channel (DLSCH) protocol data unit (PDU) with redundancy version (RV) 0 at the user equipment (UE); adding k slots; and continuing tracking timing advance (TA) samples of the radio network temporary identifier (RNTI) x, where k may be based on the subcarrier spacing.

    Base format for PUCCH Power Control for 5G (SA and NSA)

    公开(公告)号:US20240040572A1

    公开(公告)日:2024-02-01

    申请号:US18362959

    申请日:2023-07-31

    CPC classification number: H04W72/21 H04W72/541

    Abstract: A method of providing a base format for PUCCH power control is disclosed, the method comprising: defining a base format PUCCH based on established relationships with the different formats of PUCCH configured in the network, measuring an acceptable SINR for PUCCH formats x∈{0, . . . ,4} over varying channel, wherein the PUCCH format with a minimum SINR is defined as the Base format for the PUCCH calculations, calculated by multiplying PUCCH_FORMAT_X with the min of the SINR of each of the measurements of the SINR over each of the PUCCH formats.

    User Equipments (UEs) Correlation Matrix Estimation Based on Channel State Information-Reference Signals (CSI-RS)

    公开(公告)号:US20240372582A1

    公开(公告)日:2024-11-07

    申请号:US18310533

    申请日:2023-05-01

    Abstract: In one embodiment, a method includes transmitting a plurality of beamformed reference signals using a corresponding plurality of beamforming precoders; receiving from each of the plurality of UEs a signal quality metric for at least a subset of the plurality of beamformed reference signals; determining a beam-specific cross-correlation for pairs of the plurality of UEs using the signal quality metrics; determining one or more scheduling groups of UEs from the plurality of UEs based on the beam-specific cross-correlation for pairs of the plurality of UEs; and allocating a set of time-frequency resource elements to two or more UEs selected from one of the determined scheduling groups.

    Lower Bound on Users' Speed for Efficient SRS Resource Handling for MU-MIMO Transmission

    公开(公告)号:US20240007153A1

    公开(公告)日:2024-01-04

    申请号:US18346780

    申请日:2023-07-03

    CPC classification number: H04B7/0452 H04W72/0446 H04W72/23

    Abstract: A method of determining a lower bound on users' speed for efficient SRS resource handling for MU-MIMO transmission includes determining an eNodeB (eNB) or gNodeB (gNB) timing of a subframe; determining a User Equipment (UE) timing of the subframe; calculating a timing advance type corresponding to a Round Trip Time (RTT); calculating a distance to a base station corresponding to the Round Trip Time (RTT); calculating a distance traveled by a UE between two points based on the distance to the base station; calculating a user speed based on the distance traveled by the UE; deriving a lower bound based on the user speed; and filtering users that exceed the lower bound on user speed. The filtered users may be not assigned SRS. The non-filtered users may be assigned SRS and may subsequently be sent MU-MIMO transmissions.

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